An animal rights group says it flooded the home of a University of California, Los Angeles professor who carries out research on monkeys.

The FBI says the Animal Liberation Front is claiming it used a garden hose to flood the house of Edythe London on October 20.

The incident is being investigated as a case of domestic terrorism. The FBI is seeing if it is connected to a June incident where an incendiary device was lighted but did not explode by the car of a UCLA eye disease researcher.

University officials say the flooding caused between $20,000 and $40,000 in damage.